How to Make It
Heat oven to 400° F. On a rimmed baking sheet, toss the shrimp with the cayenne, 1 tablespoon of the oil, and ¼ teaspoon each salt and black pepper. Roast until opaque throughout, 8 to 10 minutes.
Meanwhile, in a food processor, combine the pepitas, parsley, cilantro, the remaining ⅓ cup of oil, and ¼ teaspoon each salt and black pepper and process until smooth. Serve with the shrimp for dipping.